Steam or hot-water boiler



(No Model.) 3 SheetsSheet 1 A. DON.

STEAM 0R HOT WATER BOILER.

No. 596,486. Patented Jan. 4,1898.

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' (No Model.) 3 Sheets-Sheet 2.

A. DON. STEAM 0R HOT WATER BOILER.

No. 596,486. Patented Jan. 4,1898.

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(No Model.) 3 Sheets-Sheet 3.

A. DON. STEAM 0R HOT WATER BOILER.

No. 596,486. Patented Jan. 4,1898.

INVENTOR UNITED STATES PATENT OFFICE.

ALEXANDER DON, or NEWARK, NEW JERSEY.

STEAM OR HOT-WATER BOILER.

SPECIFICATION forming part of Letters Patent No. 596,486, dated January 4, 1898.

Application filed December 4,1896. Serial No. 614,397. (No model.)

To ctld whom, it may concern.-

Be it known that I, ALEXANDER DON, a citi-' zen of the United States, residing at Newark, in the county of Essex and State of New J ersey, have invented certain new and useful Improvements in Steam or Hot-Water Boilers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

My invention relates to the type of hot-water and steam boilers used for heating buildings, which are made or cast in sections; and the invention has for itsobjects to materially increase the area of the surfaces against which the flames and the products of combustion act, to provide a continuous and unobstructed passage for the water, to provide an increased grate-surface to carry the fire, to provide a shaking mechanism adapted to most easily shake and clean the fire, to join the several parts together by such a means as not to allow of any leakage, and to accomplish these ends in the simplest manner.

With these and other ends in view my invention consists in the novel construction and the combinations and arrangements of the several parts to be hereinafter fully described, and finally embodied in the clauses of the claim.

To enable others to understand my invention, I will proceed to a detailed description thereof in connection with the accompanying drawings, in which- Figures 1 and 2 are perspective views of my novel construction of steam or hot water boiler. Fig. 3 is a view of the base, fire-pot, grate, and dome, partly in section and partly in front elevation. Fig. 4 is a section on line as in said Fig. 1, and Fig. 5 is a horizontal section on line 3 in said Fig. 4, showing a plan or top view of the fire-pot section. Fig. 6 is a sectional View along the line z in Fig. 2, looking in the direction of arrow a. sectional view of the top of the fire-pot section along the line a in Fig. 5, and Fig. Sis a perspective view of the fire-pot section and base detached.

Fig. 7 is av Referring to the drawings, in which similar letters of reference are employed to indicate corresponding parts, A denotes the base, provided with a grate which is made up of a series of bars I), each bar being formed by a shaft having the upwardly-extending projections, which have on their upper surfaces a series of pointed projections b".

a denotes the rests for the grate-bars, which may be either cast integral with the base A or 0 the said walls being united at their lowest parts by a margin or web, as 0 whereby a Waterway f is formed at the sides and a wa terwayf is also formed at the top and between the several walls, substantially as illustrated. The inner Wall 0 is provided on its lower part with teats or project-ions 0 which extend into the fire-pot and form a means of protecting the live fire from the surface of the metal wall, which is backed up by the water behind it, while the remainder and upper portion of the inner walls is formed with corrugations c, as shown in Figs. 4, 6, 7, and 8, thus providing as much heating-surface in the fire-pot section as is possible.

The rear and top waterways are connected by suitable water-legs c any desirable number-which are integral with the fire-pot and form increased passages for the water where it is most needed and where it will be acted on by the full force of the flames and products of combustion as they pass from the fire pot into the upper parts of the boiler. The crown-sheet or upper wall 0 is provided with a bowl vor depression 0 allowing the Water to more easily rise at the central water connection 0 in the upper wall 0 of the fire-pot C and into the dome above,it, whichobviates the liability to crack the crown-sheet, while at the same time it operates to spread the flames against the under surface of the crownsheet or upper wall 0 of the fire-pot. In said screw-threaded flange 0 forming the central water connection in the upper wall hereinabove mentioned, is screwed a ring or nipple 9, onto which is secured the screw-threaded flange e of the dome E, thereby forming a means of central water connection with the Water-passages surrounding the fire-pot section and the water-passages in the dome E above said fire-pot section. There are several other means in which this central water connection may be made, but the screw-nipple g is the preferred form of construction. Flues 0 lead from the fire-pot section through the top of the lire-pot at its upper walls a and 0 into the space 8 between the fire-pot and the dome, forming a passage for the escape of the products of combustion. The front of the fire-pot is provided with a convenient opening a for a door for the admission of fuel.

As shown in Figs. 4 and 8, the base A is provided with the shoulder or lugs a and the upwardly-projecting flange m on which the fire-pot section 0 is operatively, but removably, arranged, as will be clearly evident.

Said base A is provided with the usual opening a for the ash-pit door.

The dome-section E consists of an outer shell E, of a semicircular or other preferred feed-pipes in the case of hot-water heating to the rooms of a building.

The chamber 6, formed between the firepot and the dome-sections, is inclosed by a metallic casing 2', thus providing a chamber through which the products of combustion pass in their passage from the flues 0 connected with the fire-pot O to the dome'E. This casing may be provided with suitable clean-out doors and is lined with a suitable non-conductor z" to prevent the radiation of the heat, as will be seen from an inspection of Fig. 4.

The smoke and products of combustion are gathered at the rear of the dome by a cover 71;, covering the several outlet ends of the various flues e and 6 where the smoke and gases are united and conducted to the smokepipe rate from the dome and screwed or otherwise secured thereto.

As will be seen from Figs. 3 and 5, the firepot section is provided with the usual opening 0 for the return of the system of piping for conveying the steam or hot water through the building and back into the boiler, andj is an ordinary cock, preferably provided with a threaded end for the attachment of a hose This collar or cover it" is made sepaform, with its lower side 6 preferably corrugated, as shown, which when the dome is in position is horizontal and parallel with the top or upper wall 0 of the fire-pot section and is provided with a screw-threaded flange e, hereinabove mention ed, which corresponds to the flange c on the fire-pot section 0, these two flanges forming the means for connecting the two sections 0 and E together by means of said screw-nipple g, or any other preferred method. As has been stated, the said lower side e of the dome E is formed with corrugations, thus increasing the surface to be acted upon by the products of combustion. The dome E is provided with a back 6 cast integrally with the main shell, and a front 6 which is set slightly back from the front e of the dome and at an angle, forming an open chamber in front of the flue-spaces e ande in the dome, said front 6 being arranged at an angle to insure the proper distribution of the products of combustioninto the various flues. In the front 6 of the dome E is an opening 6 for a door, directly in front of the space before said front e, which door can be opened or removed to enable the cleaning out of the several flues e and 6 The said spaces a and 6 of which there may be any desired number, have their walls cast integrally with the ends of the outer shell e and the front 6* of the dome, and thewater circulates from the bottom of the dome-section through waterways 6 around said flues and leaves the dome at the top e where a connection is provided with a small chamber or dome h, which can be used to advantage above the dome, E to provide a space for the steam as it is generated and a better means of taking off the water connections for the or pipe thereto to admit water 1nto the boiler or to draw the water oif therefrom, as may be desired.

Changes in the form and proportions of the parts and details of construction may be made without departing from the spirit of or sacrificing the advantages of myinvention, and I therefore do not limit my present invention to the exact arrangements and combinations of the parts herein described and illustrated, and I reserve the right to make such modifications as fairly fall within the scope of my invention.

Having thus described my invention, what I claim is 1. In a boiler for steam or hot water, a firepot section, consisting, of an inner wall, an outer wall, and an intermediate and vertical waterway, the two walls joined integrally together, a horizontal crown-sheet, an upper horizontal wall above said crown-sheet provided with a means of central water connection, a horizontal waterway between said crown-sheet and upper horizontal wall, vertical smoke-flues at the back connecting the crown-sheet with said upper horizontal wall, and a series of water-legs cast integral with said inner wall, providing a means of direct communication for the water between said vertical and horizontal waterways, said water-legs being alternately spaced in relation to said flues, whereby the spaces between any two water-legs form a continuation of the smoke-flues into the fire-pot, substantially as and for the purposes set forth.

2. In a steam or hot-Water boiler, a fire-pot section made in one piece of metal, consisting, of an inner wall, an outer wall, forming vertical and horizontal waterways, a series of water legs or passages communicating between said vertical and horizontal waterways, vertical flues connecting said inner and outer walls for the passage of the products of combustion, the lower part ofsaid inner wall being provided with a multiplicity of teats or projections, and the remainder of the inner wall formed directly above said teats, with vertical corrugations, substantially as and for the purposes set forth.

3. In a steam or hot-water boiler, a fire-pot section made in one piece, consisting, of a vertical inner wall, vertically-arranged corrugations in said walls, a horizontal crown-sheet, a vertical outer wall and an upper horizontal wall, forming vertical and horizontal waterways, and a bowl or depression in said crownsheet, substantially as and for the purposes set forth.

4. In a steam or hot-water boiler, a fire-pot section made in one piece, consisting, of a vertical inner Wall, vertically-arranged corrugations in said walls, a horizontal crown-sheet, a vertical outer wall and an upper horizontal wall, forming vertical and horizontal waterways, a bowl or depression in said crownsheet, and vertical flues connecting said crown-sheet and said upper horizontal wall, for the passage of the products of combustion, substantially as and for the purposes set forth.

' 5. In a steam or hot-water boiler, a fire-pot section made in one piece, consisting, of a vertical inner wall, a horizontal crown-sheet, a vertical outer Wall and an upper horizontal wall, forming vertical and horizontal waterways, a bowl or depression in saidcrownsheet, vertical flues connecting said crownsheet and said upper horizontal wall, for the passage of the products of combustion, and the lower part of said inner wall being provided with a multiplicity of teats or projections and the remainder of said inner wall formed directly above said teats with vertical corrugations, substantially as and for the purposes set forth.

6. In a steam or hot-water boiler, a dome or top section, consisting, of an outer shell of metal, a lower corrugated side e horizontal flue space or spaces, waterways surrounding said fine space or spaces, and a means of central water connection for connection with a fire-pot section, substantially as and for the purposes set forth.

7. In a steam or hot-water boiler, a dome or top section having a central water connection forconnection with a fire-pot section, and provided with horizontal waterways and flue or flue-spaces, and having its lower side horizontal and provided with corrugations and its upper surface of a circular or curved outline, substantially as and for the purposes set forth.

8. In a steam or hot-water boiler, a top or dome section, consisting, of an outer shell of metal, alower corrugated side 6 and provided with waterways, a horizontal flue space or spaces, means of central water connection with a fire-pot section, a refnov. ble front, and a cover, 'as k, connecting said flue or flues with a chimney, substantially as and for the purposes set forth.

9. In a steam or hot-water boiler, the combination, with a fire-pot section, consisting of an inner and an outer wall, an intermediate water-space, one or more vertical flues, of a dome-section, consisting, of an outer shell of metal,interior waterway, horizontal fiue space 'or spaces, and ameans of central water connection, for connecting said dome-section with the fire-pot section, substantially as set forth.

10. In a steam or hot-water boiler, the combination, witha fire-pot section, consisting, of an inner wall, an outer Wall, a horizontal crown-sheet, provided with a means of central water connection and an upper horizontal wall, vertical smoke-flues at the back connecting the crown-sheet with said upper horizontal wall, providing a direct communication for the water between the several waterways, and water-legs alternately spaced in relation to said smoke-flues, whereby the spaces between any two water-legs form acontinuation of the smoke-flues into the fire-pot, of a dome-section, consisting, of an outer shell of metal, interior waterway, horizontal fluespaces, a means of central water connection, for connecting said dome-section with said fire-pot section, a detachable front or door for said dome-section, a smoke cover or collar, as It, connecting said flues with a chimney, and a shell or casing between said dome and firepot sections, forming a smoke-chamber, between said sections, substantially as and for the purposes set forth.

In testimony that I claim the invention set forth above I havehereunto set my hand this 25th day of November, 1896.

ALEXANDER DON. lVitnesses:

FREDK. C. FRAENTZEL, NM. H. OAMFIELD, J r. 

